Table 1:
Baseline characteristics of the study population.
| Variable | All participants (N = 888) | ≤53 years (n = 433) | >53 years (n = 455) |
|---|---|---|---|
| Sex | |||
| Female, n (%) | 453 (51) | 219 (51) | 234 (51) |
| Male, n (%) | 435 (49) | 214 (49) | 221 (49) |
| Age at CT, years | 53 ± 11 | 44 ± 7 | 62 ± 6 |
| Weight, kg | 80.5 ± 13.1 | 81.4 ± 13.3 | 79.7 ± 12.8 |
| Height, cm | 175.3 ± 9.47 | 176.6 ± 9.55 | 174.1 ± 9.24 |
| BMI, kg/m2 | 26.2 ± 3.41 | 26.1 ± 3.49 | 26.2 ± 3.35 |
| BSA, m2 | 1.96 ± 0.19 | 1.98 ± 0.19 | 1.94 ± 0.19 |
| Systolic blood pressure, mmHg | 126.5 ± 12.9 | 123.4 ± 11.1 | 129.5 ± 13.8 |
| Muscle parameters | |||
| SMA, cm2 | 147.8 ± 34.6 | 153.2 ± 34.9 | 142.6 ± 33.7 |
| Skeletal muscle index, cm2/m2 | 47.6 ± 8.38 | 48.7 ± 8.33 | 46.6 ± 8.31 |
| Skeletal muscle radiation attenuation, HU | 48.6 ± 7.52 | 51.0 ± 6.71 | 46.2 ± 7.51 |
| Urinary creatinine excretion rate, mmol/24 hours | 13.6 ± 4.64 | 14.7 ± 4.71 | 12.6 ± 4.36 |
| Height-indexed urinary creatinine excretion rate, mmol/24 hours/m | 7.72 ± 2.44 | 8.27 ± 2.48 | 7.20 ± 2.29 |
| Handgrip strength, N Dominant hand Non-dominant hand |
41.5 ± 12.0 40.6 ± 12.6 |
43.3 ± 12.2 40.7 ± 13.2 |
40.0 ± 11.7 40.5 ± 12.1 |
| Renal function parameters | |||
| estimated glomerular filtration rate, ml/min/1.73 m2 | 86.8 ± 15.0 | 92.4 ± 15.0 | 81.7 ± 13.0 |
| mGFR, ml/min | 112.5 ± 21.1 | 120.9 ± 20.0 | 104.6 ± 19.0 |
| BSA-standardized mGFR, ml/min per 1.73 m2 | 99.3 ± 15.5 | 105.7 ± 14.3 | 93.2 ± 14.1 |